Add a new Frame (F command) with horizontal auto layout (SHIFT + A command) object, call it "horcont_searchbox" with these properties:
Step 2 - create content for the parent frame
Add a new Frame (F command) with horizontal auto layout (SHIFT + A command) object under a "horcont_searchbox" frame, call it "txt_input_search" with these properties:
Import a new SVG file under a "horcont_searchbox" frame, call it "svg_search_icon" with this XML code: